manta-live-session

manta-live-session is a skill for Claude Code, Codex from antoinedc/MantaUI. It costs 61 tokens per session (2,272 once invoked), scanned B, original, MIT.

A supported tool for communicating with a real Manta box from an agent session, including starting a chat, sending a prompt, reading the reply, and creating a phone or Simulator pairing code. It is intended for live-device checks rather than unit tests.

In plain words
What is it for?
It is for verifying features that need real transcript data, blocked turns, a connected Simulator, or other live box behavior.
Why use it?
It avoids easy-to-miss mistakes in direct requests, such as asynchronous prompts, authentication, request format, and loopback-only pairing.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions AGENTS.md; mentions OpenCode.

Good fit It is for verifying features that need real transcript data, blocked turns, a connected Simulator, or other live box behavior.

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Install with agentmods
npx agentmods add skills/antoinedc/mantaui/manta-live-session
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add antoinedc/MantaUI --skill manta-live-session
Clone the repo
git clone --depth 1 https://github.com/antoinedc/MantaUI

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for manta-live-session

README.md
[![agentmods](https://agentmods.dev/badge/skills/antoinedc/mantaui/manta-live-session/github.svg)](https://agentmods.dev/skills/antoinedc/mantaui/manta-live-session)
Your own site
<a href="https://agentmods.dev/skills/antoinedc/mantaui/manta-live-session"><img src="https://agentmods.dev/badge/skills/antoinedc/mantaui/manta-live-session/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for manta-live-session

Your own site · 80×15
<a href="https://agentmods.dev/skills/antoinedc/mantaui/manta-live-session"><img src="https://agentmods.dev/badge/skills/antoinedc/mantaui/manta-live-session.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 61 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,272 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00061 $0.02272
Opus 5 $0.00030 $0.01136
Sonnet 5 $0.00012 $0.00454
Haiku 4.5 $0.00006 $0.00227

Measured 11d ago against content hash 8046bf91081c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade B, and why

manta-live-session scanned grade B with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

It is **not** installed to `/usr/local/bin` because that needs sudo this box

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

their own `curl` calls against the box and quietly got them wrong — the RPC body
.multica/skills/manta-live-session/SKILL.md · 190 lines

How it starts

The opening of the file, as written. The whole thing — 190 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Live box access — manta-probe

What this is for

Some work cannot be verified by a unit test: a screen that only renders with a real transcript, a card that only appears when a real turn blocks, a Simulator that has to be paired to a real box. Before this skill existed, agents wrote their own curl calls against the box and quietly got them wrong — the RPC body shape, the auth header, the fact that the prompt endpoint is asynchronous, and the fact that the pairing endpoint is loopback-only are each easy to miss, and a half-working request looks exactly like a broken feature.

manta-probe is the one supported way in. Do not hand-roll curl against the box; if this tool cannot do what you need, say so on the issue rather than improvising.

The one rule you cannot break

Every prompt runs on voska/default. There is no flag, no argument and no environment variable to change it — the model is a constant inside the tool. The other providers on this box are metered and are not yours to spend. If you find yourself wanting a different model, you are doing something this skill is not for.

Where it runs

The box is the Linux machine alphaclaw — the same machine the Linux agents already run on.

You are Command form
a Linux agent (manta-dev, and anything on the box) ~/.local/bin/manta-probe <cmd>
the macos agent ssh dev@alphaclaw '~/.local/bin/manta-probe <cmd>'

Always use the absolute path ~/.local/bin/manta-probe, never the bare name. A non-interactive SSH shell has a minimal PATH that does not include ~/.local/bin, so a bare manta-probe fails with "command not found" over SSH. This is verified, not theoretical — use the absolute form everywhere and the same line works from both machines.

Commands

# The one-shot most tasks want: fresh session, prompt, wait, print the reply.
~/.local/bin/manta-probe ask "Reply with exactly one word: PONG"

# Keep the session afterwards (to inspect it in the app, or prompt it again).
~/.local/bin/manta-probe ask "Read AGENTS.md and summarise section 6" --keep

# Long-form: drive a session across several turns.
SID=$(~/.local/bin/manta-probe new my-label)
~/.local/bin/manta-probe prompt "$SID" "first turn"
~/.local/bin/manta-probe prompt "$SID" "second turn"
~/.local/bin/manta-probe messages "$SID"     # dump the transcript

# Pair an iOS Simulator in one step — the app auto-claims this link, no typing.
~/.local/bin/manta-probe pair-url            # manta://pair?box=…&code=…
~/.local/bin/manta-probe pair-url --simctl   # the full xcrun simctl command
~/.local/bin/manta-probe pair                # raw code + URL (physical phone)
~/.local/bin/manta-probe server              # just the server URL

# Housekeeping — always finish with this.
~/.local/bin/manta-probe list
~/.local/bin/manta-probe clean

Read the full file on GitHub · 190 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 11d ago First seen · 190 lines · 61 tokens per session scan B 8046bf91081c

Subscribe to this mod's changes

manta-live-session is a skill published in the GitHub repository antoinedc/MantaUI (12 stars, last pushed 4d ago), licensed MIT. It adds 61 tokens to every session and 2,272 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 2 findings (asks for root, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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